Ventilator



Nov. 16,1937. J. H. McbERMENT VENTILATOR 1 Filed Aug. 21 1935 5 Shets-Shget 1 'IIIIIIIIA ATTORNEY.

ATTORNEY.

Nov. 16, 1937. J. H. MQDER'MENT 2,099,309

VENTILATOR Filed Aug. 21, 1955 5 Sheets-Sheet 4 INVENTOR.

J H. Momma BY/M Mat/11X ATTORNEY.

Patented Nov. 16, 1937 PATENT OFFICE 'vEN'rILAToB I James H. McDerment, Cleveland, Ohio,assignor to The Swartwout Company, Cleveland, Ohio,

a corporation of Ohio Application August 21,1935, Serial No. 37,195

2 Claims. (CI. 9842) Thisinvention relates to a ventilator and has particular reference to the damper and damper operating means for use in such ventilator. While I have illustrated and described a ridge ventilator,

I 5 it is .to be understood that the damper and operating means may be used in ventilators of other types. The object of the invention, broadly stated, is to provide improved damper suspension and operating mechanism, to produce a simple and durable construction which 'is less likely to get out of order and which may be operated from a remote position. A more limited object is to provide for a suspension of the damper on flexible l5 elements and to provide a' sliding actuator adapted for motion parallel'to the damper to cause movement of the damper transversely to itself; 'A still further object is to provide actuating'means for the sliding bar actuator possessing a high mechanical advantage and remote controlled means for operating such actuating means.

With the foregoing and other and more limited objects in View, as'will become apparent, the in- ;vention consists in the novel features of construction and arrangements of parts hereinafter described and illustrated in the accompanying drawings in which Fig. 1 is a transverse section corresponding substantially to the line ll of 'Fig. 2; Figs. 2 and 2a are a fragmentary longitudinal vertical section taken substantially centrally of Fig. 1; Figs. 3 and 30. are a horizontal section showing the operating mechanism in elevation; Fig. 4 is a detail section of the mount- 35 ing of the threaded operating mechanism; Fig.

5 is a fragmentary vertical section similar to Fig.. 2 and showing a modified form; Fig. 6 is a horizontal section similar to Fig. 3 and corresponding to the modified form of Fig. 5 and Figs. '7 and 8 are detail sections taken on the lines 1-? and 8-8, respectively, of Fig. 6.

Referring now to Fig. 1, it will be seen that I have illustrated my invention as applied to a building having roof elements l spaced apart to form an opening Ii adapted to be controlled. Secured to the elements Iii are sheet metal elements l2 converging upwardly and terminating in vertical, downturned edges [3. Spanning the space between the edges 13 and secured to the elements l2 are a plurality of spaced connectors M which are also secured to bow elements l which extend above the elements I2 and have connecting portions l6 forming mounting means for the operating mechanism. The lower ends of the elements I5 are turned up as indicated .ments [8.

' making up the sliding actuator 27.

at H and receive the lower edges of baffle e1e- Secured to the corners of the elements i 5 are supports l9 between which and the element i5 is clamped a ridge roll 20. The supports I 9 connect with the upper edges of the 5 elements Hi to hold the same in position. A

. damper 2! is shown in position to close the opening defined between the edges 13'. This damper is moved vertically by flexible elements 22 con-. nected thereto at spaced positions by means of 10 suitable brackets 23. The elements 22 pass upwardly and over sheaves 2 which are mounted by means of suitable brackets on elements l6. Flexible elements 22' pass longitudinally over additional sheaves 25 carried on other of the elements it. From the sheaves 25 the flexible elements 22 pass to suitable connections 26 carried by a sliding actuator 2'5. It will thus be clear that by longitudinal movement of the actuator, 2i it will be possible to raise and lower the damper 2! vertically. Additional means are provided for reciprocating the 'actuatorl'l and for holding the same in a fixed position when it is desired to hold the damper open.

In the form of my invention shown in Figs. 1

to 4 inclusive, the actuating means for the sliding actuator Zl consists of a threaded element 28 secured to such actuator by means of a pivotal connection as indicated at 29 to a transverse member 3 which connects the spaced elements The threaded element 28 is received in an internally threaded sleeve 3| which is provided with internal shoulders at each end, one receiving a bearing sleeve 32 mounted in a fixed journal 33 While the other receives an extended tubular element 34. The element M is connected at its other end to a shaft 35 which is mounted in a suitable journal 3S and held against longitudinal motion by a nut 31. A sprocket wheel 38 is mounted on the shaft. 35 and provided with a chain 39 extending downwardly to a convenient operating position. It will be obvious that the use of the threaded actuating mechanism will result in a construction which will cause the actuator 21 to remain in any position and that no latch mechanism other than the threaded actuator is necessary. The spacing of the'two elements making up the actuator 21 and the attachment of the flexible elements 22 to each thereof will result in maintaining the. damper at all times in a level position and will prevent tipping.

In Figs. 5 to 8 inclusive, I have shown a modifiedform of the invention, differing from the em-. bodiment described above in that there is connected to the slidable actuator 21 a flexible element which is passed around a stationary sheave ll and back. to a sheave 42 carried by a suitable bracket 23 mounted on a transverse member 44 connected to the two parts of the slidable actuator 27. From the sheave 42 the flexible element 45 passes to a Winding drum or shaft 45 which is rotatably mounted in suitable brackets 46 carried by the spaced frame elements Al. The shaft 45 carries a sprocket wheel 48 upon which is received a sprocket chain 49 extending doWnwardly to a convenient operating position. In this form of the invention, a latch must be provided for holding the actuator 21 in position to hold the damper 2| open. This'latch may take the form of a pivoted latch element 59 carried by a transverse member 5! connected to. the actuator 21 and a latch receiving element 52 fixedly carried by a transverse member 53 mounted on the framework Al. The latch element 52 is made up of spaced plates providedwith vertical and angular slots 54 and 55 having movable pins 56 and 51 received therein. When the latch element enters the latch receiving element 52, a notch 58 in the element 50 engages the pin 5'! which rides up the cam slot and causes the notch 59 to interlock with the pin 56. Upon release of the actuator, causing slight motion of the member 58 to, the left, the pin 5? is released whereby, upon slight motion to the right, the element 58 may be released from the pin 56 for restoration of the parts to the position shown in Fig. 5.

From the foregoing it will be clear that I have provided a device which is well adapted for its intended purpose and while I have shown and described the present preferred embodiments I wish it understood that I am not limited to the details of the disclosure but only in accordance with the appended claims and the prior art.

Having thus described my invention, what I 'claim is:

1. In a ventilator, in combination with means defining a horizontal opening to be closed, a horizontally disposed damper and means for moving said-damper vertically, parallel to itself, to and from closing relation to said opening, said last means comprising pulleys fixed with respect to said first means, one of said pulleys being spaced from another thereof laterally of said damper and one of said pulleys being spaced from another thereof longitudinally of said damper whereby the vertical projections of lines extending from each pulley to all the others will outline an area on said damper, flexible elements passing over said pulleys and extending vertically downwardly and connected to said damper whereby to suspend the same, an actuating element mounted for reciprocating movement longitudinally of said damper, said flexible elements being connected to said actuating element, remote control means for operating said actuating element and connecting means interposed between said actuating means and said remote control means and including mechanism for securing a mechanical advantage.

2. In a ventilator, in combination with means defining a horizontal opening to be closed, a horizontally disposed damper and means for moving said damper vertically, parallel to itself, to and from closing relation to said opening, said last means comprising pulleys fixed with respect to said first means, one of said pulleys being spaced from another thereof laterally of said damper and one of said pulleys being spaced from another thereof longitudinally of said damper whereby the vertical projections of lines extending'from each pulley to all the others will outline an area on said damper, flexible elements passing, over said pulleys and extending vertically downwardly and connected to said damper whereby to suspend the same, an actuating element mounted for reciprocating movement longitudinally of said damper, said flexible elements being connected to said actuating element, remote control means for operating said actuating element and connecting means interposed between said actuating means and said remote control means and including a threaded element connected to said actuator, a second threaded element threadedly engaging said first element and mounted for rotation but constrained against longitudinal motion for operating said actuator, said second threaded element receiving said first threaded element and having a sleeve portion surrounding the latter, and fixed journal means receiving saidsleeve portion.

JAMES H. MCDERMENT. 

